Effect of Lignosulfonate on the Thermal and Morphological Behavior of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)

被引：38
作者：
Lemes, A. P. [1 ]
Soto-Oviedo, M. A. [2 ]
Waldman, W. R. [3 ]
Innocentini-Mei, L. H. [4 ]
Duran, N. [1 ]
机构：
[1] Univ Estadual Campinas, Inst Chem, Biol Chem Lab, BR-13083970 Campinas, SP, Brazil
[2] Brasken SA, Triunfo, RS, Brazil
[3] Univ Estadual Norte, Dept Chem, Montes Claros, RJ, Brazil
[4] Univ Estadual Campinas, Fac Engn Quim, Dept Polymer Technol, Campinas, SP, Brazil
来源：
JOURNAL OF POLYMERS AND THE ENVIRONMENT | 2010年 / 18卷 / 03期
基金：
巴西圣保罗研究基金会;
关键词：
Poly(3-hydroxybutyrate-co-3-hydroxyvalerate); Lignosulfonate; Biodegradable polymer; Thermal characterization; Morphological characterization; THERMOGRAVIMETRY MASS-SPECTROMETRY; MECHANICAL-PROPERTIES; NATURAL FIBER; COMPOSITES; LIGNIN; POLYHYDROXYALKANOATES; BIODEGRADATION; POLYESTERS; BIOCOMPOSITES; NANOCOMPOSITE;
D O I：
10.1007/s10924-010-0170-7
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The effect of lignosulfonate on poly(3-hydroxybutyrate-co-3-hydroxyvalerate), PHBV, was studied by scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The PHBV/lignosulfonate samples were prepared by melt mixing in an internal mixer. SEM showed that PHBV/lignosulfonate samples present a cracked surface that is more intense in mixtures with high lignosulfonate proportions. According to DSC, melting and glass transition temperatures of the PHBV matrix decrease with lignosulfonate addition. The same effect was observed for melting enthalpies (Delta H-m), which indicates a decrease of crystallinity. TGA showed that thermal stability of PHBV/lignosulfonate samples was shifted to lower temperatures, which indicates the existence of an interaction between the thermal decomposition processes of PHBV and lignosulfonate.
引用
收藏
页码：250 / 259
页数：10
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